Sun Bear
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Vulnerable

Sun Bear

Helarctos malayanus

5 photos of the Sun Bear
About the Sun Bear

The sun bear (Helarctos malayanus) is the smallest of the world's eight bear species, typically weighing between 25 and 65 kilograms, with a compact body built for life in the lowland and hill forests of Southeast Asia. Named for the pale, crescent-shaped chest patch that varies in shape between individuals, sun bears are the most arboreal of all bears, spending significant time in the forest canopy where they sleep, sunbathe, and forage.

Listed as Vulnerable on the IUCN Red List, the sun bear has lost a substantial portion of its forest habitat to agricultural conversion, particularly to oil palm and rubber plantations across Borneo and Sumatra. Poaching for the illegal wildlife trade, including the extraction of bile from captive bears for use in traditional medicine, remains a serious pressure alongside deforestation. Ecologically, sun bears are important seed dispersers and play a key role in forest structure by tearing apart rotting logs to reach insects, which accelerates nutrient cycling and creates microhabitats used by other species.

Things worth knowing

  • Sun bears have the longest tongue relative to body size of any bear species, reaching up to 25 centimeters, which they use to extract honey, termites, and beetle larvae from tight crevices.
  • Their loose, baggy skin around the neck and shoulders allows them to twist inside their own hide and bite back at a predator that has grabbed them.
  • Sun bears are the only bear species native exclusively to tropical rainforest, and they do not hibernate because food is available year-round in equatorial climates.
  • The Bornean Sun Bear Conservation Center in Sabah, Malaysia, is one of the only facilities in the world dedicated specifically to the rehabilitation and release of rescued sun bears.
  • Sun bear chest patches are unique to each individual, functioning similarly to a fingerprint, which researchers use for photo-identification in the wild.
  • Unlike most bears, sun bears show no strong seasonal breeding pattern, and females give birth to one or two cubs that remain dependent on their mother for up to three years.

Challenges the Sun Bear Is Facing

high threat

Southeast Asian forest cleared

The smallest bear needs lowland forest, which is being converted for oil palm and timber across its range.

high threat

Bile farming and the pet trade

Sun bears are taken for bile, for paws, and as cubs for private keeping, particularly in Laos and Vietnam.

medium threat

Snaring

Indiscriminate snares set across Southeast Asian forest take sun bears along with everything else.

medium threat

Food trees logged

Sun bears depend on fruiting trees and bee nests in mature forest, which selective logging removes first.

Common questions

Questions people ask about the Sun Bear

Is the Sun Bear endangered?

Not in the strict sense. The Sun Bear is listed as Vulnerable on the IUCN Red List, the first of the three threatened categories and the one below Endangered. It qualifies on a decline of 30% or more, or on a population under 10,000 mature individuals.

What is a sun bear?

The sun bear (Helarctos malayanus) is the world's smallest bear species, native to the tropical forests of Southeast Asia, and listed as Vulnerable on the IUCN Red List. It is an omnivore that feeds on termites, bee larvae, wild figs, and small lizards, and plays a key role in forest health through seed dispersal and insect control.

How big is a sun bear?

Adult sun bears typically weigh between 25 and 65 kilograms, making them significantly smaller than any other bear species. Males are roughly 10 to 20 percent larger than females, and animals in Borneo tend to be smaller than those found on the Malay Peninsula.

How tall is a sun bear?

Sun bears stand roughly 60 to 70 centimeters at the shoulder when on all fours, and reach around 1.2 to 1.5 meters in body length. On their hind legs they are considerably shorter than a typical adult human, which is part of what makes them a target for the illegal pet trade.

What does a sun bear look like?

Sun bears have short, sleek black fur, a distinctively pale or orange-yellow chest patch shaped roughly like a crescent, and an elongated tongue adapted for extracting honey and termites. Their wrinkled, loose skin around the neck and face is thought to help them maneuver when caught in a predator's grip.

Where do sun bears live?

Sun bears live in the tropical rainforests of Southeast Asia, with populations across Borneo, Sumatra, peninsular Malaysia, Thailand, Myanmar, and parts of southern China and northeastern India. They depend heavily on intact lowland forest, which is being rapidly lost to palm oil plantations and logging.

Where does the sun bear live?

The sun bear lives in tropical and subtropical forests across Southeast Asia, including the island forests of Borneo and Sumatra and mainland habitats in Thailand, Cambodia, and Vietnam. According to the IUCN Red List, the species has been lost from much of its historic range due to deforestation and hunting.

Who protects them

0 organizations protect the Sun Bear

No projects have listed this species yet.